The court wizard of the storybook realm conjured aboard the Enterprise in 2259, a role forced upon Spock, who betrays King Ridley and serves the wicked Queen Neve.
Pollux is a character from The Kingdom of Elysian, the children's book that Dr M'Benga reads to his daughter Rukiya. In the Strange New Worlds episode The Elysian Kingdom, a consciousness living in the Jonisian Nebula reshapes the Enterprise into the world of the story and casts the crew in its parts, with Spock unknowingly becoming the wizard Pollux.
At first Pollux seems a loyal ally of M'Benga's King Ridley as the king searches for the Mercury Stone. He then reveals himself as a traitor in the service of Queen Neve, the role taken by Uhura, and hands the king and his companions over to her.
Pollux is the counterpart of the good wizard Caster, played by Hemmer, who alone with M'Benga keeps his real memories. Spock has no recollection of the part once the entity restores the ship.